FILE - In this April 30, 2017, file photo, Alex Trebek speaks at the 44th annual Daytime Emmy Awards at the Pasadena Civic Center in Pasadena, Calif. Trebek can see life without “Jeopardy.” Speaking Monday, July 30, 2018, on Fox News’ “OBJECTified,” Trebek said the odds are 50/50, “and a little less,” he won’t return to the game show he’s hosted since 1984 when his contract expires in 2020. (Photo by Chris Pizzello/Invision/AP, File)

On Thursday, just two days after Trebek returned to the Jeopardy! set for his first day back on the job, the 78-year-old host shared a video message to his fans and supporters thanking them for their well wishes during this trying time.

“Hi everyone, I just wanna take a few moments to say thanks to the — believe it or not — hundreds of thousands of people who have sent in tweets, texts, emails, cards, and letters wishing me well following my recent health announcement,” he began in the clip shared on Twitter."

“I’ve heard from former contestants — even Watson, the IBM computer sent me a get well card!” he stated. “Now obviously, I won’t be able to respond to all of you individually but I did want you to know that I do read everything I receive and I am thankful for the kind words, the prayers, and the advice you have offered, and I’m extremely touched by the warmth you have expressed in your comments to me,” Trebek said.

Along with the video, the tweet was captioned: "Thank you."

Trebek, who has hosted the game show for 35 years, vowed to viewers that he will courageously fight the disease while also continuing to host the game show.